Peking opera or Beijing opera (simplified Chinese: 京剧; traditional Chinese: 京劇; pinyin: Jīngjù) is a form of traditional Chinese theatre which combines music, vocal performance, mime, dance and acrobatics. It arose in the late 18th century and became fully developed and recognized by the mid-19th century. The form was extremely popular in the Qing Dynasty court and has come to be regarded as one of the cultural treasures of China. Major performance troupes are based in Beijing and Tianjin in the north, and Shanghai in the south. The art form is also preserved in Taiwan, where it is known as Guoju (國劇; pinyin: Guójù). It has also spread to other countries such as the United States and Japan.

Peking opera features four main types of performers. Performing troupes often have several of each variety, as well as numerous secondary and tertiary performers. With their elaborate and colorful costumes, performers are the only focal points on Peking opera's characteristically sparse stage. They utilize the skills of speech, song, dance, and combat in movements that are symbolic and suggestive, rather than realistic. Above all else, the skill of performers is evaluated according to the beauty of their movements. Performers also adhere to a variety of stylistic conventions that help audiences navigate the plot of the production. The layers of meaning within each movement must be expressed in time with music. The music of Peking opera can be divided into the Xipi and Erhuang styles. Melodies include arias, fixed-tune melodies, and percussion patterns. The repertoire of Peking opera includes over 1,400 works, which are based on Chinese history, folklore, and, increasingly, contemporary life.

Beijing ( /beɪˈdʒɪŋ/; Chinese: 北京; pinyin: Běijīng, [peɪ˨˩ t͡ɕiŋ˥]), formerly romanized as Peking ( /piːˈkɪŋ/ or /peɪˈkɪŋ/), is the capital of the People's Republic of China and one of the most populous cities in the world, with a population of 19,612,368 as of 2010. The metropolis, located in northern China, is governed as a direct-controlled municipality under the national government, with 14 urban and suburban districts and two rural counties. Beijing Municipality is surrounded by Hebei Province with the exception of neighboring Tianjin Municipality to the southeast.

Beijing is China's second largest city by urban population after Shanghai and is the country's political, cultural, and educational center, and home to the headquarters for most of China's largest state-owned companies. Beijing is a major transportation hub in the national highway, expressway, railway and high-speed rail network. Beijing's Capital International Airport is the second busiest in the world by passenger traffic.